Haliplidae, Aube, 1836

Majka, Christopher, van Vondel, Bernhard & Webster, Reginald, 2009, The Haliplidae (Coleoptera) of Atlantic Canada: new records, distribution, and faunal composition, ZooKeys 22 (22), pp. 249-266 : 251

Key to the Haliplidae of Atlantic Canada and Adjacent Regions

In order to facilitate the identification of haliplids found in Atlantic Canada, a key to genera, subgenera, and species found in the region and in adjacent jurisdictions is presented below. It is adapted from Brigham (1996), Downie and Arnett (1996), Roughley (2000), Vondel (1991), and Wallis (1933).

Key A: Genera of Haliplidae Aubé

1 Pronotum with two large spots on posterior margin; metacoxal plates margined and large, exposing only apical abdominal sternum; apical segments of maxillary and labial palpi longer than penultimate segment.......................... ................................................................................... Peltodytes Regimbart

– Pronotum without two large spots on posterior margin; metacoxal plates not margined and shorter, exposing last three abdominal sterna; apical segments of maxillary and labial palpi considerably shorter than penultimate segment........................................................................... Haliplus Latreille